Answer:
In chapters three and four of Frankenstein, Victor's autodidacticism progresses rapidly as he becomes more and more obsessed with his studies. He becomes completely absorbed in his work and spends long hours in his laboratory, neglecting his health and relationships.
Victor's studies become increasingly focused on natural philosophy and chemistry, and he becomes fascinated with the idea of creating life. He becomes so consumed with this idea that he begins to neglect all other aspects of his life, including his family and friends.
As Victor delves deeper into his studies, his obsession with creating life becomes all-consuming, and he begins to lose touch with reality. He becomes increasingly isolated and withdrawn, and his mental and physical health begin to suffer.
Overall, Victor's autodidacticism progresses rapidly in these chapters, but it also comes at a great cost, as his obsession with his work ultimately leads to his downfall.